Friday, March 7, 2014

collect data
from the rest of the class, record the average yield for each prey and predator

Data Table 1b

Beak Types

Record Data on this Handout

Results
- Stations 1-5

scissors

chopsticks

clothespins

spoons

tweezers

Prey
Type

pennies

1

2

1

6

7

small pebbles

3

5

2

13

13

Pipette tips

6

7

5

7

15

paper clips

6

4

5

7

14

foam peanuts

6

12

6

9

13

Results -
Stations 1-5

Beak Types

Data Table 2bRecord Data on this Handout

scissors

chopsticks

clothespins

spoons

tweezers

Prey
Type

pennies

1

0

1

3

7

large pebbles

1

2

6

11

8

Pipette tips

7

6

6

5

11

paper clips

6

3

7

5

9

* Numbers equal or greater than 5 mean that varriety of SB was able to survive in that environment
** Numbers equalto or greater than 12 mean that varity is able to Trive! i.e. they have energy to reproduce laying5-8 eggs at a time.

Answer the
following questions. Use a separate sheet of paper that you will attach to the
group data tables

Part 1

Which prey items were preferred
(highest yield) by more than one predator?

Could all of these predators
coexist in a single habitat? Why or why not?

What happened when resources became
limited?

Which predators (beak types) would
have survived and likely reproduced more?

Is there a predator in this
environment that would have been selected against?

Part 2

How did the change in environment
affect the birds?

What types of resources can be
limited in an environment? List five examples.

Were particular birds adversely
affected?

Did any group of birds do better in
this new wet environment?If so,
which ones?

Which birds would likely have more
offspring?

Is the effect on the survival and
reproduction of these birds an example of natural selection or artificial
selection? How are they different?

Does natural selection operate on
individuals or populations? Explain.

Monday, March 3, 2014

1 Which plate boundary has the fastest motion?
2 How many meters will this plate move after 100 yrs?
3 Which boundary has the slowest motion
4 How many meters will this plate move after 100 yrs?
5 Name the continetal plates.
6 Name the two continents that will converge in the next million years or so.
7 What will happen to the Atlnticocean due to plate motion over the next few million years?